| 摘要 |
An improved arc welding gun includes a quick connect connector, a differential taper cable clamp and an easily operated trigger locking assembly. The quick connect connector includes a current contacting pin which fits within a mating sleeve. The sleeve is provided with a pair of axial slits and is spring biased to firmly grip the contacting pin to provide a low resistance connection. Preferably, the connector is held together by a locking sleeve which can be either connected or disconnected with a fractional rotation of the locking ring. The cable clamp includes two clamping members which fit together to clamp the power conductors of a cable between inner and outer clamping surfaces. The inner and outer clamping surfaces are both conical and are provided with different tapers such that a narrow throat region is formed between the two clamping surfaces near the cable end of the clamp. This differential taper provides a low resistance and a secure grip on the power conductors. The locking trigger assembly includes a slideably mounted locking crescent which has one end situated near a finger surface of the trigger assembly. Pressure on this end of the crescent simultaneously pivots the trigger and locks the trigger in the pivoted position.
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